third_party/WebKit/Source/core/html/DocumentNameCollection.cpp

// Copyright 2014 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#include "core/html/DocumentNameCollection.h"

#include "core/html/HTMLEmbedElement.h"
#include "core/html/HTMLObjectElement.h"

namespace blink {

DocumentNameCollection::DocumentNameCollection(ContainerNode& document,
                                               const AtomicString& name)
    : HTMLNameCollection(document, DocumentNamedItems, name) {}

bool DocumentNameCollection::elementMatches(const HTMLElement& element) const {
  // Match images, forms, embeds, objects and iframes by name,
  // object by id, and images by id but only if they have
  // a name attribute (this very strange rule matches IE)
  if (isHTMLFormElement(element) || isHTMLIFrameElement(element) ||
      (isHTMLEmbedElement(element) && toHTMLEmbedElement(element).isExposed()))
    return element.getNameAttribute() == m_name;
  if (isHTMLObjectElement(element) && toHTMLObjectElement(element).isExposed())
    return element.getNameAttribute() == m_name ||
           element.getIdAttribute() == m_name;
  if (isHTMLImageElement(element))
    return element.getNameAttribute() == m_name ||
           (element.getIdAttribute() == m_name && element.hasName());
  return false;
}

}  // namespace blink